121
transmission will be encrypted
Enable Session Timer
Set the line to enable call ending by session
timer refreshment. The call session will be
ended if there is not new session timer event
update received after the timeout period
Session Timeout
Set the session timer timeout period
Enable BLF List
Enable/Disable BLF List
BLF List Number
BLF List allows one BLF key to monitor the
status of a group. Multiple BLF lists are
supported.
Response Single Codec
If setting enabled, the device will use single
codec in response to an incoming call request
BLF Server
The registered server will receive the
subscription package from ordinary application
of BLF phone.
Please enter the BLF server, if the sever does
not support subscription package, the registered
server and subscription server will be separated.
Keep Alive Type
Set the line to use dummy UDP or SIP OPTION
packet to keep NAT pinhole opened
Keep Alive Interval
Set the keep alive packet transmitting interval
Keep Authentication
Keep the authentication parameters from
previous authentication
Blocking Anonymous Call
Reject any incoming call without presenting
caller ID
User Agent
Set the user agent, the default is Model with
Software Version.
Specific Server Type
Set the line to collaborate with specific server
type
SIP Version
Set the SIP version
Anonymous Call Standard
Set the standard to be used for anonymous
Local Port
Set the local port
Ring Type
Set the ring tone type for the line
Enable user=phone
Sets user=phone in SIP messages.
Use Tel Call
Set use tel call
Auto TCP
Using TCP protocol to guarantee usability of
transport for SIP messages above 1500 bytes
Enable Rport
Set the line to add rport in SIP headers
